Client/resources/app_view.ui

<?xml version="1.0" encoding="UTF-8" ?>
<interface>
    <template class="CmAppView" parent="GtkBox">
        <property name="orientation">vertical</property>
        <property name="hexpand">True</property>
        <child>
            <object class="GtkButton" id="button">
                <property name="halign">center</property>
                <property name="child">
                    <object class="AdwButtonContent">
                        <property name="icon-name">user-trash-symbolic</property>
                        <property name="label" translatable="yes">Remove</property>
                    </object>
                </property>
                <style>
                    <class name="destructive-action" />
                </style>
            </object>
        </child>
    </template>
</interface>